Proco rat serial number dating
Originally, 1N914 diodes were used, which were later replaced with 1N4148 since RAT2.
The 'Turbo RAT' pedal uses red LEDs for this purpose (red LEDs have about a twice as high forward voltage as the original silicon diodes), while the 'You Dirty RAT' pedal uses 1N34A germanium diodes (clipping at a lower forward voltage).
The distortion stage is followed by a passive 'reverse' tone filter and volume control.
The general design is very similar to the Boss DS-1 distortion pedal. Known for its poor slew rate, it largely accounts for the sonic difference between the two pedals.
I spent the first moments feeling the weight of the steel, and looking inside at the circuit board. I missed the pedal, even if there is no LED to the reissue. The Circuit Board has the number ‘2492’ stamped onto it, including RAT RE-ISSUE 1991.
Dating this by serial number seems to be a trivial effort by the looks of the boards out there.
The origins of the Pro Co "The RAT" can be traced back to the mid-1970s, when Pro Co engineers Scott Burnham and Steve Kiraly repaired and hot-rodded existing distortion pedals, such as the Dallas Arbiter Fuzz Face.
Again, please keep their identity a secret Click on the "Continue" button search with your zip/postal code.I've got Pro Co Vintage Reissue Big Box Rat & want to determine the year of manufacture. I believe you can also open up your Rat and look at the pots - the two numbers in the middle are the year the pedal was made. If you post a pic of the guts, I can pin it down for you. Rat serial numbers aren't coded in any way, but I've seen much lower serial numbers on the Vintage Rat Reissues that were made at the end of their production run. Rat serial numbers aren't coded in any way, but I've seen much lower serial numbers on the Vintage Rat Reissues that were made at the end of their production run.